Upon reboot, press or F7 to select Disable driver signature enforcement .
Hypervisor-Protected Code Integrity blocks unverified code from executing in the Windows kernel.
The (often identified as Error Code 39 ) is a recurring issue where the operating system fails to load the device driver for the hardware, typically due to driver corruption, conflicts, or OS updates. While it primarily affects users attempting to run legacy versions like X7 on newer systems like Windows 10/11, it is also seen in modern 2022 installations. Core Causes and Symptoms
Note: This configuration resets upon a standard reboot unless permanently modified via command prompts or group policies. Method 2: Configure Advanced Boot Settings via CMD mastercam x7 2022 virtual usb bus error high quality
A common technical fix for Error 39 involves using regedit to navigate to the 36FC9E60... folder and deleting the UpperFilters value.
Manually uninstall existing virtual USB devices from the before performing a clean reinstall. 2. Address Digital Signature Issues
If the automatic uninstall does not delete the files, you may need to clean the driver store. This process uses a tool to run a command prompt with TrustedInstaller privileges (or you can use an advanced system utility like Dism++) . Upon reboot, press or F7 to select Disable
Expand the or System devices section.
To resolve this and ensure high-quality software performance, follow these technical protocols: 1. Disable Driver Signature Enforcement This is the most common fix for the USB bus error. Click the Start menu and select Settings. Navigate to Update & Security > Recovery. Under Advanced Startup, click Restart Now.
In some cases, deleting the "UpperFilters" entry for the specific USB class in the Registry Editor can clear the error. You can follow a detailed tutorial on YouTube to safely perform this fix. While it primarily affects users attempting to run
: Unplug all USB devices (including the HASP key), reboot the machine, and then plug the HASP key into a different port first before reconnecting other peripherals.
In some cases, the virtual device installs correctly with no errors in Device Manager, but Mastercam still fails to launch or just hangs in the background. This indicates the issue is not the driver itself but something preventing it from communicating with the application.